The news agency said resynchronising North and South Korean time was "the first practical step" since the summit "to speed up the process for the north and the south to become one and turn their different and separated things into the same and single ones".
The officials said, however, that a peace treaty between the two Koreas could diminish the need for the 23,500 USA soldiers now stationed on the peninsula, the newspaper said. Trump has also mentioned Singapore as a possible meeting place. It is this historical background that makes Trump's seemingly spontaneous decision on March 8 to meet Kim so astonishing - it reverses decades of American policy.
During the Trump-Kim summit, the position of the Trump administration (but not Trump himself) will be clear: North Korea must take substantial up-front action to reduce nuclear weapons.
Then-CIA Director Mike Pompeo, before taking office as USA secretary of state, met Kim last month and reported the North Korean leader was not demanding the withdrawal of all US forces as a precondition for a summit with Trump.
While Trump's National Security Adviser John Bolton rubbished the report a few times, the Blue House or the official residence of the South Korean president also said the report did not say it right.
It went on to say that the two leaders would "continue their close coordination of developments regarding the Korean Peninsula following the April 27 inter-Korean Summit", referring to the recent historic meeting of North and South Korean leaders.
The New York Times said Trump had asked the Pentagon for troop withdrawal options, although Trump said it was not true and Bolton called the report 'utter nonsense'.
The US president added, however: "Now I have to tell you, at some point into the future, I would like to save the money".
Last week's South-North Summit, the third between leaders of the two countries, re-affirmed previously formulated steps for achieving peace dating back as far as 1972. But troops are not on the table. "As I said yesterday, stay tuned", Trump said, referring to an earlier tweet on the issue.
Trump said the ongoing talks with North Korea over the fate of three Americans held in North Korea are "very substantive" after his lawyer Rudy Giuliani claimed they would be freed on Thursday. Trump stunned almost everyone involved by agreeing on the spot.